Geek_Hunter Said:
"Microsoft Teams drains the battery very fast.: I use my phone for teams calls and it takes my battery from 90% to 20% in an hour. Microsoft Teams is draining the battery on iPhone (OS version 14.7.1) quite a lot. Even when teams is not running. How can I stop it?"
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First Off: Back Up First: Be certain you back up your iPhone prior to troubleshooting this. That way, you will have something to restore your iPhone from should anything go wrong with from here.
then...
A. Chat With Microsoft About this:
You might need to chat with Microsoft about this. So, Go Here: Contact Us - Virtual Agent - Microsoft Support
B. A Temporary Workaround: Try Using Teams Web App for School.